Vswitchd is a user-state daemon process. Its core is to execute the ofproto logic. We know that ovs is implemented in accordance with the openflow switch specification. Taking Layer 2 packet forwarding as an example, a traditional switch (including the implementation of Linux Bridge) searches for a cam table, find the port corresponding to the DST Mac, while the implementation of the open vswitch is to find whether there is a corresponding flow based
If there is any mistake, please correct the study.
Handle_bridge () function, which is in the LINUX2.6.34\NET\CORE\DEV.C
Here's a callback to the Br_handle_frame_hook () function, which is a hook function. The Br_handle_frame_hook () function is br_handle_frame_hook=br_handle_frame in linux2.6.34\net\bridge\br_input.c, so the actual function is Br_ Handle_frame.
function to raise the destination address in the packet, if the destination address is the local MAC address will call the Br_handl
EXEC.SQC file is as follows:#include #include EXEC SQL BEGIN DECLARE section; /* Main variable description start */Char deptname[64];Char hsno[64];Char hsname[64];Char hssex[64];int hsage;int newage;Long SQLCODE;EXEC SQL END DECLARE section; /* Main variable description end */EXEC SQL INCLUDE Sqlca; /* Define the SQL Communication area *//*************************************************************************/ int main (void) /*c Language Main program start */ { int count = 0; Char yn; /* V
"vertically" into multiple base tables. For example: The student relationship student (sno,sname,ssex,sage,sdept), is divided into SX (sno,sname,sage) and Sy (sno,ssex,sdept) two relationships. The original table student is the result of the natural connection of the SX table and the SY table. If you create a view student:CREATE VIEW Student (sno,sname,ssex,sage,sdept) as SELECT
enable users to view the same data in multiple anglesThe view mechanism enables different users to view the same data in different ways, and this flexibility is necessary when many different kinds of users share the same database.3. Views provide a degree of logical independence for refactoring databasesThe physical independence of data means that the user's application is not dependent on the physical structure of the database. The logical independence of data is that when a database is re-con
. Code){Case "netconnection. Connect. Success ":Alert. Show ("Congratulations! You're connected "+" \ n ");Break;Case "netconnection. Connect. Rejected ":Trace ("Oops! The connection was rejected "+" \ n ");Break;Case "netconnection. Connect. Closed ":Trace ("thanks! The connection has been closed "+" \ n ");Break;}}Public var cam: camera;Public Function checkcambusy (usercam: Camera): void{VaR chktime: Number = 0;VaR intervalid: number;Function callb
, Gui, and 3D scene in sequence.
All classes in irrlicht that process messages must implement the ieventreciever interface. Usertransferer is an ieventtransferer specified in the createdevice function. That is to say, the priority of message processing is usercycler> GUI> 3D scene.
In our program, no usercycler is specified, and no GUI is available for the time being. Therefore, the message is directly sent to scenemanager.
Scenemanager messages are also transmitted by the iscenemanager's post
analysis of effect data after CATIA using LMT Licmanager systemCATIA is an abbreviation for English computer Aided tri-dimensional Interface application. is one of the world's mainstream Cad/cae/cam integration software. In the 70 's Dassault Aviation became the first user and CATIA was born. From 1982 to 1988, CATIA has released version 1, 2, 3, and released the powerful 4 version in 1993, and now CATIA software is divided into the V4 version and the
Edge's synchronous modeling technology, combined with the advantages of parametric modeling and direct modeling, can be directly edited for both its own native model and the model from other software, with unparalleled speed and flexibility; SolidWorks has no such technology;The 2.solid Edge has more modules, with a comprehensive functionality beyond SolidWorks. And in the details of each module function, such as sheet metal function, two-dimensional to three-dimensional, structural parts desig
.
first realize the viewfinder, first determine whether the phone has the relevant hardware equipment ( rear camera ( master ) or front camera )
if((photocamera.iscameratypesupported (cameratype.primary) = =true) ||(photocamera.iscameratypesupported (cameratype.frontfacing)==true)) { //Initialize the camera, when available. if(photocamera.iscameratypesupported (cameratype.frontfacing)) {//Use front-facing Camera if available.Cam=NewMic
view current configurationS # copy running-config startup-config Save the current configuration in RAM to NVRAMS> show interface [type slot _ #/port _ #] view information of all or specified InterfacesS> show ip: displays the IP configuration of the vswitch (available only on the 1900 Series)S> show version to view device informationS # show ip interface brief verify IP configurationS (config-if) # speed 10 | 100 | auto sets the interface RateS (config-if) # duplex auto | full | half sets the i
current configurations# copy running-config Startup-config saves the current configuration in RAM into the NVRAMS> show interface [Type slot_#/port_#] View information for all or specified interfacesS> show IP Display IP configuration of the switch (available on 1900 series only)S> Show version View device informations# show ip interface brief verify IP configurationS (config-if) # speed 10|100|auto set interface rateS (config-if) # Duplex Auto|full|half Set Interface Duplex modeS> show mac-add
12.1 css3 provides deformation support
CSS 3 supports common geometric transformations for HTML components, including rotation, scaling, skew, and displacement.
4. You can also use the transformation matrix for deformation.
Css3 provides the following two attribute values for deformation support.
Transform: This attribute is used to set deformation. This attribute supports one or more deformation functions. Css3 provides the following deformation functions.
Translate (TX [, Ty]): This function s
are like △x and △y.
x’ = x+Δxy’ = y+Δy
Transform: translate (tx, ty); In CSS 3 is equivalent to transform: matrix (, tx, ty). Note that no unit is required when matrix is used, the default is px, while the translate requires units, which can be px, em, and so on.Zoom and stretch original size up to 1.5 times in length and width
If the matrix (Sx, Sy,) parameter is provided, that is, a or d is not equal to 1, for example, a =
translation, into a x+tx,y+ty point. Very simple. If mathematically speaking, TX and Ty are like Δx and Δy.
X ' = X+δxY ' = Y+δy
Transform:translate (TX, Ty) in CSS 3 is equivalent to Transform:matrix (1,0,0,1,tx,ty); Note that when using the matrix, you do not need units, the default is PX, and translate need units, It can be a unit such as PX and EM.Scaling and stretching the original size 1.5 times times longer and widerIf the parameter matrix (
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